<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="vue.js"></script>
</head>
<body>
      <div id="app">
          <div>{{name + 'Less'}}</div>
          <div v-text="name + 'aa'"></div>
          <div v-html="name + 'haha'"></div>
      </div>
<script>
    var vm = new Vue({
        el: "#app",
        data: {
            name: "Dell"
        }
    })
</script>
</body>
</html>